Squid is IO and memory bounded, not cpu bounded. Use the CPU money to
buy more RAM/disks
mike
At 12:09 PM 7/5/2008, Marcus Kool wrote:
Michel wrote:
On tor, 2008-07-03 at 12:04 +0800, Roy M. wrote:
We are planning to replace this testing server with two or three
cheaper 1U servers (sort of redundancy!)
Intel Dual Core or Quad Core CPU x1 (no SMP)
Squid uses only one core, so rather Dual core than Quad...
I am not understanding why you keep suggesting single core as preferred cpu
even if squid's core is actually not multi-thread capable a faster
cpu is better -
there are also other things running on a machine so a smp machine
ever is a benefit
to overall performance
modern OS also should give squid's aufs threading benefits but I am
not totally
sure about your design here but at least diskd when running several
diskd processes
is getting benefits from multicore cpus - and a lot and if you do
not believe it
set up squid/disk on a 8-core machine and compare with 1|2|4|8 or
more diskds to
your single-core-cpu-thing and measure it, in fact you do not even
measure it, you
can see it and smell it ...
and at the buttom line more power more performance so there is no
way a single core
runs faster than a dual or quad core on a modern OS, not even get close to it
I agree. To give a little bit more specific advise:
Squid is mostly single-threaded and in large environments needs a
lot of CPU power.
So I recommend to buy a system with at least 2 cores and maximize CPU cache
and memory speed (use 2 or 4 DIMMs) to get the most of the raw CPU power.
For example, go for a Dell R300 with Quad-core 2.66 GHz, 6 MB cache
for a good price
(EUR 749 ex VAT base price). Dell is just an example, I am not affiliated.
-Marcus
michel
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